AUTHOR=Xiao Hongfei , Lin Deqin , Zhang Zhaowei TITLE=Impact of COVID-19 transmission rate on co-movement of China’s stock markets JOURNAL=Frontiers in Applied Mathematics and Statistics VOLUME=Volume 11 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/applied-mathematics-and-statistics/articles/10.3389/fams.2025.1564664 DOI=10.3389/fams.2025.1564664 ISSN=2297-4687